海底天然气水合物地层钻井潜在风险及控制措施

天然气水合物是一种清洁高效能源，其广泛分布于大陆永久冻土带和海洋环境中，其中海洋环境又以海洋大陆斜坡和深海盆地为主。对海底天然气水合物地层进行钻井是研究海底天然气水合物及获得海底地层油气资源最直接的手段之一，但海底天然气水合物地层地质环境复杂，钻井面临诸多风险。本文通过综合分析海底天然气水合物地层的储层特性，探讨了海底地层中天然气水合物分解与再形成对钻井工程的影响、可能诱发的地质灾害及环境效应，并提出了相应的应对措施，以期为我国海底天然气水合物地层钻井提供参考。

The Potential Risks of Drilling in Marine Gas Hydrate Bearing Sediments and the Corresponding Strategies

Natural gas hydrate is a clean and efficient energy source which is widely distributed in marine continental slope and deep sea basin. Though drilling is one of the most efficient way for gas hydrate research and getting resources, the complex geological environment in marine gas hydrate bearing sediments leads to drilling faces many risks. The characteristics of marine gas hydrate bearing sediments were analyzed and the . The influences to the drilling engineering、, the potential Geological geological hazards, and environmental effects caused by natural gas hydrate decomposition and formation were summarized in this paper. The corresponding countermeasures are put forward. It could be as a reference for drilling in marine gas hydrate bearing sediments.